One of the benefits of a microservice architecture is that it enables shorter delivery times and, in extreme cases, allows continuous delivery of new versions. To be able to deliver that fast, you need to establish an organization where dev and ops work together under the mantra you built it, you run it. This means that developers are no longer allowed to simply pass new versions of the software over to the operations team. Instead, the dev and ops organizations need to work much more closely together, organized into teams that have full responsibility for the end-to-end life cycle of one microservice (or a group of related microservices). Besides the organizational part of dev/ops, the teams also need to automate the delivery chain, that is, the steps for building, testing, packaging, and deploying the microservices to the various deployment environments. This is known as setting up a delivery pipeline

https://www.appdynamics.com/topics/why-devops-is-important#:~:text=DevOps%20is%20important%20because%20it's,easier%20maintenance%20of%20existing%20deployments.